That could be. They sell them in single sets because the later 51-55 trucks have only a single arm. I'm not familiar with the earlier window regulators. But the two on the bottom are what engage the track at the bottom of the glass. The arm in the upper right of your picture would probably need a track to run in if it has a roller on it.
Last edited by klhansen; 03/04/2025 7:08 PM.
